1 Dirham - Zain al-'Abidin I

Samudra-Pasai, on the northern tip of Sumatra, was the earliest documented Islamic sultanate in Southeast Asia, and its gold dirhams are among the oldest Muslim coinage struck in the region. The sultanate's position astride the Malacca Strait made it a compulsory stop for Indian Ocean traders, and the coins circulated well beyond Sumatra — Ibn Battuta visited the court around 1345 and noted the sultan's devotion to Shafi'i jurisprudence, the same legal school that would later define Islam across maritime Southeast Asia.

The .700 fineness reflects locally available Sumatran alluvial gold, not a debasement — regional deposits simply ran at that purity.